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Migratory stopover sites used by Reddish Egrets: prioritization for conservation
Avian Conservation and Ecology ( IF 1.4 ) Pub Date : 2022-03-21 , DOI: 10.5751/ace-01973-170115
Lianne Koczur, Bart Ballard

The conditions encountered during the migratory period, particularly at stopover sites, can influence individual survival, reproductive success, and population stability; therefore, knowledge of migration ecology is important for developing conservation strategies. We monitored stopover site use by Reddish Egrets (Egretta rufescens) marked with satellite transmitters between their breeding area in southern Texas, USA, and wintering sites in Mexico and El Salvador. The duration of time spent at stopover sites varied among individuals and seasons, ranging from 1 to 64 days at a particular site. Three of the four individuals that were tracked for multiple seasons flew farther between stopover sites during autumn migration compared to spring, and the average distance between stopovers ranged from 192 to 580 km among individuals. Laguna San Andres in Tamaulipas, Mexico, appeared to be the most important stopover site based on the proportion of the marked population that used it. Understanding the stopover ecology and habitat use of migratory individuals will help direct conservation efforts for the species.

中文翻译:

红白鹭使用的迁徙中途停留地点:优先保护

迁徙期间遇到的条件,特别是在中途停留地,会影响个体生存、繁殖成功和种群稳定性;因此,迁移生态学知识对于制定保护战略很重要。我们监测了红白鹭 (Egretta rufescens) 在美国德克萨斯州南部的繁殖区与墨西哥和萨尔瓦多的越冬地点之间标记有卫星发射器的中途停留地点的使用情况。在中途停留地点停留的时间因个人和季节而异,在特定地点从 1 天到 64 天不等。与春季相比,在多个季节被跟踪的四个个体中,有三个在秋季迁徙期间在中途停留地之间飞行的距离更远,个体之间的平均中途停留距离在 192 至 580 公里之间。根据使用它的标记人口的比例,墨西哥塔毛利帕斯的拉古纳圣安德烈斯似乎是最重要的中途停留地点。了解迁徙个体的中途停留生态和栖息地使用将有助于指导该物种的保护工作。
更新日期:2022-03-21
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